Effect of Intersymbol and Quadrature Channel Interference on Error Probability of 16-ary Offset Quadrature Amplitude Modulation with Sinusoidal and Rectangular Shaping

In this paper we study the effect of intersymbol and quadrature channel interference on the average error probability of 16-ary offset quadrature amplitude modulation with rectangular or sinusoidal shaping functions. We present numerical results assuming that the transmitter and receiver filters are identical Butterworth filters of order
N = 1,2,..., 6,
and the decision rule is either fixed or adaptive.